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Mauricio “Pachá” Vargas Sepúlveda
Blog with notes about R, Shiny, SQL, Python, Linux and C++. This blog is listed on R-Bloggers.
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Mauricio “Pachá” Vargas S.
September 1, 2025
Because of delays with my scholarship payment, if this post is useful to you I kindly ask a minimal donation on Buy Me a Coffee that shall be used to continue my Open Source efforts. If you need an R package or Shiny dashboard for your team, you can email me or inquiry on Fiverr. The full explanation is here: A Personal Message from an Open Source Contributor
I build production-ready R tools that solve business problems.
Whether you need to:
- Automate workflows with custom R packages
- Create interactive dashboards for data exploration
- Integrate C++/SQL for blazing-fast performance
- Standardize analyses across your organization
I can help. I am an Engineer with Master’s in Statistics and Political Sciencem and I have been maintaining R packages in last ten years that resulted in consultancy projects for multiple clients to solve data problems combining R, C++ and SQL. You can view my Open Source work on GitHub.
< section id="why-work-with-me" class="level1">Why work with me?
I’ve built 20+ open-source R packages used by researchers and businesses worldwide since 2015:
- Data extraction: TabulaPDF (extract tables from PDFs), Cpp11tesseract (OCR for text extraction)
- Data quality: Pointblank (data validation framework)
- Econometrics: Capybara (fast fixed-effects models), Gravity (structural gravity estimation), Leontief (input-output analysis)
What I offer
Custom R packages
- Turn repetitive code into reusable functions
- Create organization-specific functions to query data and get KPIs
- Support team’s best practices
Shiny dashboards
- Interactive data exploration tools
- Real-time monitoring dashboards
- Custom reporting interfaces
Let’s build something together
From $40 CAD/hour (30 USD/hour) for consultations to fixed-price projects for complete packages.
Send me a message with your requirements, and I’ll respond within 24 hours asking clarifying questions to ensure I understand your needs.
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